package ioperation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelbookList implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("删除图书");

        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要删除的书名：");
        String name = sc.nextLine();
        int currentSize = bookList.getUseSize();
        int pos = -1;
        int i = 0;
        for (; i < currentSize; i++) {
            Book book = bookList.getBooks(i);
            if (book.getName().equals(name)){
                pos = i;
                break;
            }
        }
        if (i == currentSize){
            System.out.println("没有你要删除的这本书");
            return;
        }

//        开始删除
        for (int j = pos; j < currentSize - 1; j++){
//            bookList[j] = bookList[ j + 1]
            Book book = bookList.getBooks(j + 1);
            bookList.setBooks(j,book);
        }

        bookList.setUseSize(currentSize - 1);
        System.out.println("删除成功");
    }

}
